put packages.yaml in SPACK_ROOT

- this is safer for use in environments like continuous integration where we don't want to
  perturb any persistent configuration

perf-regression/theta/README.spack.md

@@ -12,52 +12,14 @@ git clone git@xgitlab.cels.anl.gov:sds/sds-repo
 spack repo add .
 ```
 
-# edit .spack/cray/packages.yaml to look like this:
-# The important things are to use the existing compiler and MPI library
-```
-packages:
-    mpich:
-        modules: 
-            mpich@7.7.2 arch=cray-cnl6-mic_knl: cray-mpich/7.7.2
-        buildable: False
-    autoconf:
-        paths:
-            autoconf@2.69: /usr
-        buildable: False
-    m4:
-        paths:
-            m4@1.4.16: /usr
-        buildable: False
-    automake:
-        paths:
-            automake@1.13.4: /usr
-        buildable: False
-    pkg-config:
-        paths:
-            pkg-config@0.29: /usr
-        buildable: False
-    libtool:
-        paths:
-            libtool@2.4.2: /usr
-        buildable: False
-    perl:
-        paths:
-            perl@5.18.2: /usr
-        buildable: False
-    cmake:
-        paths:
-            cmake@3.5.2: /usr
-        buildable: False
-    ssg:
-        variants: +mpi
-    libfabric:
-        variants: fabrics=gni
-    all:
-        providers:
-            mpi: [mpich]
+This directory contains a packages.yaml that should be copied to one of the spack
+configuration locations documented here: https://spack.readthedocs.io/en/stable/configuration.html .  This could be your ~/.spack/cray/ directory, for example. 
+The automation scripts in this directory use $SPACK_ROOT/etc/spack to avoid 
+perturbing the account on which the regression tests are executed.
+
 ```
 # compile everything and load module for ssg
 spack install ssg
 # you may need to re-run setup-env.sh before loading to avoid some problems with finding modules
 spack load -r ssg
-
+```

perf-regression/theta/packages.yaml

+packages:
+    mpich:
+        modules: 
+            mpich@7.7.2 arch=cray-cnl6-mic_knl: cray-mpich/7.7.2
+        buildable: False
+    autoconf:
+        paths:
+            autoconf@2.69: /usr
+        buildable: False
+    m4:
+        paths:
+            m4@1.4.16: /usr
+        buildable: False
+    automake:
+        paths:
+            automake@1.13.4: /usr
+        buildable: False
+    pkg-config:
+        paths:
+            pkg-config@0.29: /usr
+        buildable: False
+    libtool:
+        paths:
+            libtool@2.4.2: /usr
+        buildable: False
+    perl:
+        paths:
+            perl@5.18.2: /usr
+        buildable: False
+    cmake:
+        paths:
+            cmake@3.5.2: /usr
+        buildable: False
+    ssg:
+        variants: +mpi
+    libfabric:
+        variants: fabrics=gni
+    all:
+        providers:
+            mpi: [mpich]

perf-regression/theta/run-regression.sh

@@ -23,6 +23,7 @@ JOBDIR=~/tmp/mochi-regression-job-$$
 # scratch area to clone and build things
 mkdir -p $SANDBOX
 cp spack-shell.patch  $SANDBOX/
+cp packages.yaml  $SANDBOX/
 
 # scratch area for job submission
 mkdir -p $JOBDIR
@@ -42,6 +43,7 @@ cd $SANDBOX/spack
 patch -p1 < ../spack-shell.patch
 export SPACK_SHELL=bash
 . $SANDBOX/spack/share/spack/setup-env.sh
+cp $SANDBOX/packages.yaml $SPACK_ROOT/etc/spack
 spack repo add $SANDBOX/sds-repo
 spack uninstall -R -y argobots mercury libfabric  | true
 spack install ssg